There are a lot of dialects for Chinese, but if the information I heard right, INDIA have MOOOORE dialects. seems like.

Ferrara! YOU WENT TO IRORO PLACE? Did you tell him?
South East Asia are pretty much immigrants from South China portion. Hokkien, TiewChow, Hakka amongst the bigger tribes.
Wow, then it seems pretty accurate in anime/manga. About the school life. I am even more jealous now! D:
Not the pressure part. XD

Singaporean Chinese, is a mix with the local, mainly Malay. That is how the Chinese merge in within the local. Even the local use Chinese slang into their own language. Interesting symbiosis.